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[/] [or1k/] [tags/] [rel-0-3-0-rc1/] [or1ksim/] [pm/] [pm.c] - Rev 167
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/* pm.c -- Simulation of OpenRISC 1000 power management Copyright (C) 1999 Damjan Lampret, lampret@opencores.org This file is part of OpenRISC 1000 Architectural Simulator. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* This is functional simulation of OpenRISC 1000 architectural power management. */ #include <stdlib.h> #include <stdio.h> #include <string.h> #include "pm.h" #include "spr_defs.h" #include "sprs.h" extern int cont_run; /* Reset. It initializes PMR register. */ void pm_reset() { printf("Resetting Power Management.\n"); mtspr(SPR_PMR, 0); } /* Simulation hook. Must be called every clock cycle to simulate PM It does internal functional power management simulation. */ void pm_clock() { unsigned long pmr; pmr = mfspr(SPR_PMR); /* PMR[SDF] and PMR[DCGE] are ignored completely. */ if (pmr & SPR_PMR_SUME) { printf("SUSPEND: PMR[SUME] bit was set.\n"); cont_run = 0; } }
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